I have a pixel 10 pro and have tried no less than 5 times to get my apps to work on graphene, no luck.
I'm no slouch either, I've developed for android for almost a decade.
I'm not disagreeing with ya, just adding a comment so folks are aware that the "Graphene just works" crowd is sometimes a bit hyperbolic.
What apps?
(idle interest; I use Graphene, but few apps, and everything worked so far)
I've been using it for a bit over a year. Installed in a few minutes thanks to WebUSB. A bit of research needed to set the right permissions on Google Play Services.
After that? I only had one application fail due to Graphene's memory allocator. No weird bugs, no need to restart like some siblings are commenting. As close to the "Graphene just works" as it could be.
However, I'm not heavy into Google's ecosystem. Google Pay will not work but I'm not a user, some Google features won't tell you why they don't work but I'm not using them either (Quick Share for instance), none of my apps require the highest Play Integrity level. Maybe the person who say this are a specific type of person where use-cases don't overlap with what breaks on Graphene.